Mechanism for driving the diaphragms of disk phonographs.



No. 897,053. PATENTED AUG. 25, 1908.

E. c. BOULANGER & J. B. DELAYE. MECHANISM FOR DRIVING THE DIAPHRAGMS OF DISK PHONOGRAPHS.

APPLICATION FILED NOV. 27, 1907.

' Driving the .0

UNITED STATES PATENT OFFICE.

ELIE-E G. BOLLANGER AND JEAN BAPTISTE DELAYE, OF PARIS, FRANCE, ASSIGNORS, BY

MESXE- AS51053! IINTS, TO SOCIETY) ARTHUR CERF ET CIE., OF PARIS, FRANCE, A CORPO- l'tATlOX UF FHA NOE.

KECHAHISH FOR DRIVING not: DIAPHBAGHB 0? i018]! PHONOGBIAPHS.

To all whom it may concern:

Be it known that we, ELISE CAMUS Bou- LARGER and Jun Banners DELAYE, citisome of the French Republic, residing at Paris, France, have invented certain new and useful Im rovements in Mechanism for isphragms of Disk Phonographs, of which the following is a specificatiou.

Thoinvention has for its object to produce the displacement of the sound box of disk phonogrephs in an automatic manner, while dispensing-dill the costly parts (which are also difiicult; to regulate) such as are ordinaril em loyed.

The displacement is ordinarily effected by means of a screw carriage with which there are engaged at will the jaws of a nut fixed to the itting for the trumpet and serving to displace it. This disengagementof the sound box from the disk is effected in the mechanism described, in 2: special manner; in addi tion, an arrangement described permits of recordingor reproducing phonographic postcards.

Figure 1 is a side elevation of the apparatus as a whole. Fig. 2 is a plan view of the apparatus shown in Fig. 1. Fig. 3 repre sents a front elevation of' the regulating mechanism. Fi 4.,is a front elevation of the sound box lilting mechanism.

The apparatus consists of an ordinary movement M, one of the shafts O of which is vertical and carries the plate I) which at will may receive the disk, or by dispensing with the screw for fixing the disk, permits of arra ing on the plate a phonographic )ostcan for reproduction or recording. 'l'ith this objectthe card is'placcd upon the plate and is held at the center by means of a flat .rm g D provided with small pins G serving to center it own the plate. This dish is likewise provided with at point Q which en ters the card C, and holds it in the normal position necessary to cll'ect its reproduction or recording.

The trumpet F is mounted on a pillar ll upon which it is ..l l(! to rotate; thi trumpet carrying a SOllllKl box E which in the usual manner is )rovided with a diaphragm having a stylus which is placed in contact with the disk. The movenwntof the trumpet to carry the stylus of the diaphragm to and from engagement with the disk or record is ob- Sp eciflcation 0! Letters Patent.

' Appllnaflon and mum's-z, 1901. florist Ho. 404.04

Patented Aug. 25, 1908.

- tained bi means of a cam fixed to the summit of t e pillar carryi v the trum et; it ivots on a shaft in the ilirect-ion in icsted By the arrow in Fig. his operation results in causing the upper'phr of the said piece to rotate. of a. profiled cam. the part B being eccentric and causing the trumpet F to rise; when the handle B is turned from right to left, the

7 center of this cam is concave and-enables the trumpet to be supported in the position necessitateu for the eliicicnt OPOI'fl-ilOll of the diaphragm of the sound box. The part I) of the cam is less eccentric in the drawing but it mav present the same form as B.

which would enable the trumpet to be raised whether the handle B is turned to the light or left. I In Fig. 3 the speed qeguhrhing mechanism and the braking met hnnism :lre shown. The

regulator R is of the ordimu-y centrifugal ball type and is n'ovided with :1 disk Y against which the shoe N of the brake maybe caused to hear at will by acting upon the handle 0'. Beneath the shuft of the regulator there is arranged a screw, provided with :1 plates against which the disk V strikes and exerts a braking action so as to modify the speed of the regulator.

The mechanism for displacing the sound box which is characteristic of the invention,

is as follows: The movement is provided with a shaft A. which in ordinary running controls the driving screw. This shaft is prolonged outside andjs provided with a spiral spring U, which surrr'unds and is able to rotote with the said'shaft. At its exiermity this shaft carries a screw threaded portion provided with a knob U enabling the interval separating the conyolutions of the spring and consequently their ]pitch to be modified.

A narrow, flexible strip engages on the one hand between the convolutions and on the other hand is fixed to the arm H which is solid with the pillar ll which carries the trumpet. When the shaft A rotates, its rotation produces a corresponding rotation of the external part carrying the spring U; the latter rotates and consequently the strip L which is engaged between the convolutions follows the same movement; the result is the pivoting of the pillar H and the displacement of the trumpet F.

The method of displacement is very sim This part presents the form so ple; the pitch formed by the convolutions of friction, this sleeve will also be adjustable; as

before, the strip L engaging between the ccnvolutions of the screw of the sleeve and following its movement. The disengagement of the strip L from between the convolutions and consequently its independence, is obtained by means of a lever M, which in rocking about its shaft lifts the strip L by means of the eccentric art it with which it is provided. The resu t of this method of driving is to permit of recording disks wherein the interval separating the furrows recorded varies, this interval being caused to vary either by modifying the interval be- .tween the convolutions of the spring or by changing the pitch of the screw threaded sleeve.

Havin thus described and ascertained the nature 0 our invention, and in what manner the same may be performed, we declare that what we claim is:

1. A disk phonographcomprising a revoluble support adapted to receive the disks, a diaphragm having a stylus mounted to traverse a disk on said support and movable toward 'or from the center thereof to describe spiral convolutions thcrcon, and a feed screw opcrativcly conucctcd to the revolublc disk.

support and the diaphragm and adjustable with rcfcrcnce to the pitch thcrcof to cause corresponding variations in the pitch of the respect to a disk on said support.

2. A disk phonograph comprising afr voluble disk support, a diaphragm having a stylus adapted to cooperate with a disk upon said support. and mounted to move towar or from the ccntcr of su h disk, and n. fccd scl'cw opcrativcly conncctcd toiho rcvolublc support and coi'iperating wit h the diaphragm and having means for adjusting the pitch thcl'cof to cause the stylus of thc lattcr to dcscribc convolutions of dill'crcnt pitchcs up n thc disk rotating with said support.

A disk phonograph comprising a rcvoionic disk support, a diaphragm mounted to move toward or from the ccntcr of a disk on said support and having a stylus, a fccd srl'cw o]wrativcly conm-ctcd to the disk support and to said diaphrhgm for causing thc t vlus of thc lattcr to dcscribc conv -lu i ns o: aid disk as the latter rotutcs. and llllu'h for varying the pitch of said scrcw to nose at corrcs )()ll(llrvariation in the pitch f the convo utions describcd upon the disk by the stylus of the diaphragm. 4

utions described by the stylus with 4. A phonograph comprisinga revoluble record support, a diaphragm having a stylus adapted to cooperate with a record on said support, and a feed screw having one end supported and operatively connected to the record support and embodyiu a convoluted spring, a part connected to t e diaphragm and cooperating with the convolutions of said spring for feeding the stylus of the diaphra m relatively to the record, and means on the opposite or free end of said screw and cooperating with such spring to vary the pitch thereof.

5. A phonograph com rising a revoluble 1 record support, a diap iragm and st lus mounted to cooperate t erewith, and a ieed device rotatably connected .to the recordsupport and comprising a shaft, a helical s )ring mounted thereon, a part connected to t e diaphragm and engaging between the convolutions of said spring to feed the diaphra m relatively to the'record, and a device adjustable axially of said shaft for compressing or ex' anding said spring to increase or decrease t to pitch thereof and thereby corres nr-udii'igly varying the pitch of the convol diaphragm with respect to the record.

6. A phonograph (0111' )rising a revoluble record support, a .dia iragm and stylus mounted to cooperate t lore-with, and a feed device for the diaphragm comprising a shaft rotatabi y connected to the record support, a helical spring surrounding said shat and rotatable thcrcwith, a part connected to the diaphragm and cooperating with the convolut-ions of said spring for feeding the stylus of the diaphragm relatively to the record, and a nut thrcadcd on said shaft and adjustable axially thereof for compressing or expanding the spring to wary the pitch thereof.

- 7. A phonograph com )rising a revoluble record support, a diaphragm and, stylus mounted to cooperate therewith, a feed de vice comprising a convoluted spring rotatably cooncctcd to tho record sup )ort, and a member movable with the diap iragin and adjustable to and from operative position rclnt i\'cl to the convolutions of said spring.

A phonograph comprising a 'rcvoluble record support, a rotatable standard, a sound trumpet mountcd to rotate with said standard and providcd with a diaphragm having a. stylus to cooperate with a record on said support, a feed screw rotatably connect ed to the record support, a member connected to rotate with said .standard and movable to and from operative position rchuivcly to the. fccd screw, and a cam piv-it d to said standard and cooperating with and member to disengage the latter from clh "row.

0. A phonograph comprising a reyoluble record support, a rotatable pillar provided ill, forked bearing arms at its upper end, a

utions described by the stylus of'the I sound trumpetmtafa-Vo "with said pillar and pimmlly ntlzurhml in 11:12 hearing :ums thereon so as in swing in a Yvrtira! plane, a diaphragm and stylus on till irumpct mm"- able {0 and frum npomiive pusiiiun rein.- Jveiy (0 a. ICcmd m smd suppcrt and :1 can: pivoted 0n :1- part of thfpiiim" to turn in :1 piano Lmnsvcrse to the axis of the trumpvt and cofipvraflng with the trumpet tn support 01clatter'mui U10 diaphragm in an opvmtix 9 or an innpemtiw position.

' H). A disk phonographmmprisirg: urovuhxnk: rm-nrd suppurting piau, a ring surmumiing the edge of said pinto fm' damping a phunogrzaphic can! thvrvun, pins fur cvntoring said ring on said plate, the pins being spaced to rm-vivv n ph mngm-phi card without pvrfumting tlw same, and a puin! urra-ngod within the 0am! rwoiving spam! b0- lwvvn Hm (Tutoring pins and adapted in perfuraiv such mud to vausv the. iuilvr n rumtn with said platv. 

